Breitling · Navitimer

Strap for Navitimer 1 B01 Chronograph 46 Stainless Steel / Black / Croco / Pin

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width24 mm
Case diameter46 mm
ReferenceAB0127211B1P1 (aka: AB012721.BG78.760P)
FamilyNavitimer
MovementBreitling caliber Caliber B01 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Chronometer
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Navitimer AB0127211B1P1 (aka: AB012721.BG78.760P)

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Navitimer AB0127211B1P1 (aka: AB012721.BG78.760P), seen from the bench

The Navitimer represents one of Breitling's historic models, developed in the 1950s for civil aviation. It is equipped with the B01 in-house automatic caliber with column-wheel chronograph function and chronometer certification. The case features 24mm lugs and integrates the distinctive circular slide rule for aerial navigation calculations.

Frequently asked questions

What is the lug width of the Breitling Navitimer AB0127211B1P1?

The lug width of the Breitling Navitimer AB0127211B1P1 is 24mm. This width is the standard specification for mid-to-large Navitimer models and is essential for selecting a compatible strap. Always verify this measurement using a digital calliper positioned perpendicularly between the lugs before purchase.

Which strap is most suitable for the Breitling Navitimer AB0127211B1P1?

For the Navitimer AB0127211B1P1, we recommend vegetable-tanned leather or alligator straps. Vegetable-tanned leather reflects the historical legacy of pilot straps, developing elegant patina over time. Alligator offers superior durability and comfort, with longevity exceeding twenty years. Both materials enhance the brushed finish of the stainless steel case.

How do I change the strap on my Breitling Navitimer AB0127211B1P1?

To change the strap, place the watch on a soft pad (to prevent case scratching) and use a spring bar tool to gently push the lug pin outward. Remove the elasticated bar and insert it into the new strap, then reinsert into the lug holes ensuring it is fully seated. Alternatively, the Casati Milano atelier offers professional strap-changing service by appointment.

Can I use an aftermarket strap compatible with the Breitling Navitimer AB0127211B1P1?

Yes, any strap with a 24mm lug width is compatible with the AB0127211B1P1. Milano Straps offers a curated collection of artisanal straps in various leathers (Tuscan, alligator, shell cordovan, rubber) customisable in length, initials, and stitching thread. No professional technical assistance is required for installation.

What is the lifespan of a leather strap for the Breitling Navitimer AB0127211B1P1?

Lifespan depends on material and usage patterns. A well-maintained vegetable-tanned leather strap lasts 3-5 years in daily use before replacement, developing visually compelling patina. An alligator strap maintains structural and aesthetic integrity for 15-20 years. Natural vulcanised rubber exhibits lifespan comparable to alligator. Regular maintenance—drying after water exposure, protection from heat sources—significantly extends longevity.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only